The following program, tested against Joda 1.5.1 (2007-12-04 13:07)
shows that Joda is not able to parse date/times for a period of 5
hours on a particular day in the America/Guatemala timezone.
Everything works fine in UTC. Because the program does not supply
daylight savings time specifiers, it would be OK for Joda to block out
1 hour but 5 hours is indicative of a bug.
Hopefully someone will be able to find the source of this bug and add
this testcase to your unit tests. I appreciate your help.
import org.joda.time.DateTimeZone;
import org.joda.time.Instant;
import org.joda.time.ReadableInstant;
import org.joda.time.MutableDateTime;
import org.joda.time.format.DateTimeFormat;
import org.joda.time.format.DateTimeFormatter;
import java.util.Locale;
/**
* A simple program to demonstrate a parsing problem with the Joda parsing
* routines for a particular timezone. Although the date format does not
* include the daylight savings time information, at most that makes a single
* hour ambiguous. This program shows that several hours are not parse-able.
*/
public class DateTimeParseBug {
public static void main(String argv[]) {
DateTimeFormatter fmt = DateTimeFormat.shortDateTime();
Locale locale = Locale.US;
DateTimeZone timeZone = DateTimeZone.forID("America/Guatemala");
// This works
fmt.withZone(timeZone).parseDateTime("10/1/06 5:00 AM");
// But none of these work even though the time zone changes the day before
// happens at midnight (which causes 11pm on 9/30 to be repeated)
fmt.withZone(timeZone).parseDateTime("10/1/06 4:00 AM");
fmt.withZone(timeZone).parseDateTime("10/1/06 3:00 AM");
fmt.withZone(timeZone).parseDateTime("10/1/06 2:00 AM");
fmt.withZone(timeZone).parseDateTime("10/1/06 1:00 AM");
}
}
import org.joda.time.DateTimeZone;
import org.joda.time.Instant;
import org.joda.time.ReadableInstant;
import org.joda.time.MutableDateTime;
import org.joda.time.format.DateTimeFormat;
import org.joda.time.format.DateTimeFormatter;
import java.util.Locale;
/**
* A simple program to demonstrate a parsing problem with the Joda parsing
* routines for a particular timezone. Although the date format does not
* include the daylight savings time information, at most that makes a single
* hour ambiguous. This program shows that several hours are not parse-able.
*/
public class DateTimeParseBug {
public static void main(String argv[]) {
DateTimeFormatter fmt = DateTimeFormat.shortDateTime();
Locale locale = Locale.US;
DateTimeZone timeZone = DateTimeZone.forID("America/Guatemala");
// This works
fmt.withZone(timeZone).parseDateTime("10/1/06 5:00 AM");
// But none of these work even though the time zone changes the day before
// happens at midnight (which causes 11pm on 9/30 to be repeated)
fmt.withZone(timeZone).parseDateTime("10/1/06 4:00 AM");
fmt.withZone(timeZone).parseDateTime("10/1/06 3:00 AM");
fmt.withZone(timeZone).parseDateTime("10/1/06 2:00 AM");
fmt.withZone(timeZone).parseDateTime("10/1/06 1:00 AM");
}
}
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